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// SPDX-License-Identifier: GPL-2.0
/* Marvell RVU PF/VF Netdev Devlink
*
* Copyright (C) 2021 Marvell.
*/
#include "otx2_common.h"
/* Devlink Params APIs */
static int otx2_dl_mcam_count_validate(struct devlink *devlink, u32 id,
union devlink_param_value val,
struct netlink_ext_ack *extack)
{
struct otx2_devlink *otx2_dl = devlink_priv(devlink);
struct otx2_nic *pfvf = otx2_dl->pfvf;
struct otx2_flow_config *flow_cfg;
if (!pfvf->flow_cfg) {
NL_SET_ERR_MSG_MOD(extack,
"pfvf->flow_cfg not initialized");
return -EINVAL;
}
flow_cfg = pfvf->flow_cfg;
if (flow_cfg && flow_cfg->nr_flows) {
NL_SET_ERR_MSG_MOD(extack,
"Cannot modify count when there are active rules");
return -EINVAL;
}
return 0;
}
static int otx2_dl_mcam_count_set(struct devlink *devlink, u32 id,
struct devlink_param_gset_ctx *ctx,
struct netlink_ext_ack *extack)
{
struct otx2_devlink *otx2_dl = devlink_priv(devlink);
struct otx2_nic *pfvf = otx2_dl->pfvf;
if (!pfvf->flow_cfg)
return 0;
otx2_alloc_mcam_entries(pfvf, ctx->val.vu16);
return 0;
}
static int otx2_dl_mcam_count_get(struct devlink *devlink, u32 id,
struct devlink_param_gset_ctx *ctx)
{
struct otx2_devlink *otx2_dl = devlink_priv(devlink);
struct otx2_nic *pfvf = otx2_dl->pfvf;
struct otx2_flow_config *flow_cfg;
if (!pfvf->flow_cfg) {
ctx->val.vu16 = 0;
return 0;
}
flow_cfg = pfvf->flow_cfg;
ctx->val.vu16 = flow_cfg->max_flows;
return 0;
}
static int otx2_dl_ucast_flt_cnt_set(struct devlink *devlink, u32 id,
struct devlink_param_gset_ctx *ctx,
struct netlink_ext_ack *extack)
{
struct otx2_devlink *otx2_dl = devlink_priv(devlink);
struct otx2_nic *pfvf = otx2_dl->pfvf;
int err;
pfvf->flow_cfg->ucast_flt_cnt = ctx->val.vu8;
otx2_mcam_flow_del(pfvf);
err = otx2_mcam_entry_init(pfvf);
if (err)
return err;
return 0;
}
static int otx2_dl_ucast_flt_cnt_get(struct devlink *devlink, u32 id,
struct devlink_param_gset_ctx *ctx)
{
struct otx2_devlink *otx2_dl = devlink_priv(devlink);
struct otx2_nic *pfvf = otx2_dl->pfvf;
ctx->val.vu8 = pfvf->flow_cfg ? pfvf->flow_cfg->ucast_flt_cnt : 0;
return 0;
}
static int otx2_dl_ucast_flt_cnt_validate(struct devlink *devlink, u32 id,
union devlink_param_value val,
struct netlink_ext_ack *extack)
{
struct otx2_devlink *otx2_dl = devlink_priv(devlink);
struct otx2_nic *pfvf = otx2_dl->pfvf;
/* Check for UNICAST filter support*/
if (!(pfvf->flags & OTX2_FLAG_UCAST_FLTR_SUPPORT)) {
NL_SET_ERR_MSG_MOD(extack,
"Unicast filter not enabled");
return -EINVAL;
}
if (!pfvf->flow_cfg) {
NL_SET_ERR_MSG_MOD(extack,
"pfvf->flow_cfg not initialized");
return -EINVAL;
}
if (pfvf->flow_cfg->nr_flows) {
NL_SET_ERR_MSG_MOD(extack,
"Cannot modify count when there are active rules");
return -EINVAL;
}
return 0;
}
enum otx2_dl_param_id {
OTX2_DEVLINK_PARAM_ID_BASE = DEVLINK_PARAM_GENERIC_ID_MAX,
OTX2_DEVLINK_PARAM_ID_MCAM_COUNT,
OTX2_DEVLINK_PARAM_ID_UCAST_FLT_CNT,
};
static const struct devlink_param otx2_dl_params[] = {
DEVLINK_PARAM_DRIVER(OTX2_DEVLINK_PARAM_ID_MCAM_COUNT,
"mcam_count", DEVLINK_PARAM_TYPE_U16,
BIT(DEVLINK_PARAM_CMODE_RUNTIME),
otx2_dl_mcam_count_get, otx2_dl_mcam_count_set,
otx2_dl_mcam_count_validate),
DEVLINK_PARAM_DRIVER(OTX2_DEVLINK_PARAM_ID_UCAST_FLT_CNT,
"unicast_filter_count", DEVLINK_PARAM_TYPE_U8,
BIT(DEVLINK_PARAM_CMODE_RUNTIME),
otx2_dl_ucast_flt_cnt_get, otx2_dl_ucast_flt_cnt_set,
otx2_dl_ucast_flt_cnt_validate),
};
static const struct devlink_ops otx2_devlink_ops = {
};
int otx2_register_dl(struct otx2_nic *pfvf)
{
struct otx2_devlink *otx2_dl;
struct devlink *dl;
int err;
dl = devlink_alloc(&otx2_devlink_ops,
sizeof(struct otx2_devlink), pfvf->dev);
if (!dl) {
dev_warn(pfvf->dev, "devlink_alloc failed\n");
return -ENOMEM;
}
otx2_dl = devlink_priv(dl);
otx2_dl->dl = dl;
otx2_dl->pfvf = pfvf;
pfvf->dl = otx2_dl;
err = devlink_params_register(dl, otx2_dl_params,
ARRAY_SIZE(otx2_dl_params));
if (err) {
dev_err(pfvf->dev,
"devlink params register failed with error %d", err);
goto err_dl;
}
devlink_register(dl);
return 0;
err_dl:
devlink_free(dl);
return err;
}
EXPORT_SYMBOL(otx2_register_dl);
void otx2_unregister_dl(struct otx2_nic *pfvf)
{
struct otx2_devlink *otx2_dl = pfvf->dl;
struct devlink *dl = otx2_dl->dl;
devlink_unregister(dl);
devlink_params_unregister(dl, otx2_dl_params,
ARRAY_SIZE(otx2_dl_params));
devlink_free(dl);
}
EXPORT_SYMBOL(otx2_unregister_dl);
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